October weather forecast
Berkeley, CA

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the neon-lit iconic Berkeley University Sather Tower in California
the neon-lit iconic Berkeley University Sather Tower in California

Weather in October

The full-fledged autumn in October witnesses a sharp fall in temperatures between 54.9°F to 70.7°F. This dip accompanies the transformation of foliage into vibrant hues, enhancing the aesthetic aura of the city. The precipitation pattern changes with a slight increase to 0.28" spreading over 3.5 days. As the city gears up for the oncoming winter, a gradual increase in the cloud cover to 17% is noticeable. The UV index of 4 still calls for appropriate sun protection measures, and the crisp wind adds to the charm of this season.

Temperature

With the arrival of October, Berkeley experiences a modest decline in average high-temperatures, transitioning from a warm 76.6°F in September to a pleasant 70.7°F. During October, Berkeley consistently records a temperature low averaging a cool 54.9°F.

Humidity

With an average relative humidity of 64%, October is the least humid month.

Rainfall

In Berkeley, in October, it is raining for 3.5 days, with typically 0.28" of accumulated precipitation. In Berkeley, California, during the entire year, the rain falls for 55.6 days and collects up to 5.24" of precipitation.

Daylight

In Berkeley, the average length of the day in October is 11h and 12min.
On the first day of October in Berkeley, sunrise is at 7:04 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 6:11 pm PDT.

Sunshine

The average sunshine in October is 7h.

UV index

The average daily maximum UV index in October in Berkeley is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 4 in October transforms into this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

What is the average October temperature in Berkeley?

In Berkeley, in October, the average high-temperature is 70.7°F, and the average low-temperature is 54.9°F.

What is the least humid month in Berkeley?

October is the least humid month in Berkeley, California, with an average relative humidity of 64%.

What is the average humidity in October in Berkeley?

In Berkeley, California, the average relative humidity in October is 64%.

How many days does it rain in October in Berkeley?

In Berkeley, California, in October, during 3.5 rainfall days, 0.28" of precipitation is typically accumulated.

What is the average length of the day in October in Berkeley?

The average day length in October in Berkeley, California, is 11h and 12min.

What time are sunrise and sunset in October in Berkeley?

On the first day of October, sunrise is at 7:04 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 6:11 pm PDT.

How many hours of sunshine does Berkeley have in October?

In Berkeley, California, the average sunshine duration in October is 7h.

What is the UV index intensity in October in Berkeley?

In Berkeley, California, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Berkeley, CA

Average temperature in October - Berkeley, CA
  • Average high temperature in October: 70.7°F

The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in October: 54.9°F

The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in October
Berkeley, CA

Average pressure in October - Berkeley, CA
  • Average pressure in October: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in October
Berkeley, CA

Average wind speed in October - Berkeley, CA
  • Average wind speed in October: 5.2mph

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).

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Average humidity in October
Berkeley, CA

Average humidity in October - Berkeley, CA
  • Average humidity in October: 64%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in October
Berkeley, CA

Average rainfall in October - Berkeley, CA
  • Average rainfall in October: 0.28"

The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").

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Average rainfall days in October
Berkeley, CA

Average rainfall days in October - Berkeley, CA
  • Average rainfall days in October: 3.5 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).

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Average daylight in October /
Average sunshine in October
Berkeley, CA

Average daylight in October / Average sunshine in October - Berkeley, CA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in October: 7h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in October
Berkeley, CA

Average sunshine days in October - Berkeley, CA
  • Average sunshine days in October: 26 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).

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Average UV index in October
Berkeley, CA

Average UV index in October - Berkeley, CA
  • Average UV index in October: 4

The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in October
Berkeley, CA

Average cloud cover in October - Berkeley, CA
  • Average cloud cover in October: 17

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in October
Berkeley, CA

Average visibility in October - Berkeley, CA
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Berkeley, California, USA

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